Window sash lock



Oct. 22, 1935. H A BUSBY 2,018,346

WINDOW SASH LOCK Filed June L8l 1934 .Harpe-MZ. Bimby,

@y Wn@ Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE WINDOW SASH LOCK Harper A. Busby, Chicago, Ill.

Application June 18, 1934, Serial No. 731,034

8 Claims. (Cl. 'l0-14) The present invention especially relates to improvements on window sash locks.

Among the objects of the present invention is to provide a novel locking device for window sashes which may be easily manufactured, fabricated at small cost, and readily placed in position, a device which is foolproof, troubleproof, rattleproof, weatherproof and burglarproof.

Heretofore, the sashes in a Window have been looked by means of a rotatable member secured to one of the sashes which has been provided with a cam surface engageable with a latch or locking member on the other of the sashes. Such locking means is usually placed on the oppositely disposed members of the sash frames and is readily accessible for those desiring to gain entrance therethrough merely by cutting or breaking a small portion of the pane of glass in either one of the sashes adjacent thereto. Such a device is therefore not burglarproof, and is extremely objectionable on this account.

One of the objects of the present invention is to provide a novel locking means adapted to be readily connected to these frame members of sashes or the like, which is burglarproof and cannot be readily manipulated or operated from the exterior of the window sashes even though the panes of glass adjacent thereto may be cut or broken.

Another object of the present invention is to provide a novel locking means for sashes of a window, which is normally operated with' a key and which is adapted to draw these frame members together to provide an effective weatherproof joint between the same.

Another object within the purview of the present invention is to p-rovide a novel locking device invisible from the exterior of the sash members of a window and substantially invisible from the interior.

The present invention further comprehends the idea of providing novel locking means in sashes of a window construction, so disposed in these sashes that the same may be locked together to provide for suitable Ventilating of the room or compartment, yet preventing access thereto through the window.

A still further object of the present invention is to provide a novel locking device for window sashes which, when operated, is automatically released from its locking engagement with these sashes so that the same may be moved relative to one another.

The invention further includes the idea of providing a novel locking device which is substantially invisible from the interior, one which quickly and easily draws the sashes together to provide a weather-tight joint therebetween and one which permits easier cleaning of the windows inasmuch as the same is substantially en- 5 tirely closed and is not in the way of the individual performing this operation.

Other objects, features, capabilities and advantages are comprehended by the invention, as will later appear and as are inherently possessed l0 thereby.

Referring to the drawing:

Figure 1 is a fragmentary view in elevation of relatively movable sash members of a window construction disclosing an embodiment of the 15 present locking device operatively associated therewith;

Figure 2 is a fragmentary view in elevation of relatively movable sash members of a windo-W construction disclosing an embodiment of the 20 present invention attached thereto whereby a suitable opening in the window construction is provided for Ventilating purposes:

Figure 3 is an enlarged fragmentary view in cross section taken through the locking device as 25 disclosed in Figure 1 of the drawing; and

Figure 4 is a fragmentary view in cross section of window sashes disclosing a locking device of modified construction.

Referring now more in detail to the drawing 30 and more particularly to Figures 1 and 3 thereof,

a locking mechanism 2 made in accordance with the present invention is disclosed in association with sashes 4 and 6 of a window construction, these sashes having oppositely disposed frame 35 members 8 and I0, respectively. The frame member I0 of the lower sash member 6 is formed with a horizontally disposed opening I0 adapted to receive the sleeve I I2 of the locking device. This sleeve I I2 frictionally engages in the opening I|0 o and is provided with a cap or closure member I I4 threadedly engaging the same at its outer end, which cap is flush with the inner face of the frame member and is formed with an opening IIB therethrough. The inner end of the sleeve I I 2 is formed with an opening I I8 through which extends a locking member |20. Locking member |20 is formed with an enlarged head |22 movable within the sleeve ||2, a washer |23 being disposed adjacent thereto which forms an abutment for a coil spring |24, which coil spring at its other end abuts a washer or the like |26 disposed adjacent the inner end of sleeve I|2.

The inner end of locking member |20 is provided with threads engageable with the internal 55 threads of a sleeve member |28 disposed in the frame member 8, this sleeve member being secured to the frame member as by means oi' the screws or the like |30.

The head |22 of locking member |20 is formed with a non-circular recess or depression |32 adapted to receive a non-circular shank of a key which may be introduced through the opening ||6 of closure member ||4. yIt will be apparent, therefore, thatV when the key is in engaging relation with the head |22 oi' locking member |20, the locking member |20 may bel either screwed into engagement; with the sleeve Y|28V or Y released from its threaded engagement therewith. 'I'he threads at the inner end of locking member |20 are of sufficient pitch to eiect a complete locking engagement between sash members 8 Y and l0 by one or more rotations of the locking member |20. When the locking member |20 is moved into engagement with the sleeve |28 and rotated, the sash member 8 is drawn into intimate associationwithframe member 0 to effect a weather-tight joint therebetween, the coil spring 'serving to maintain this tight joint. This tight engagement `prevents rain, dirt, dust or other foreign substances from gaining access into the house, and prevents rattling of the sashes. It will V'also' be apparent that the locking device is not Visible from the exterior of the window. When it is desired to move these sashes relative to one another, the key may be introduced through opening ||6 into engaging relation with head |22 oi! locking member |20 and rotated to effect a disengagement of the threads at its inner end with the sleeve |28. The locking member |20 at this l time, under'the impulse of coil spring |24, will `move tothe left as shownin Figure 3 so that the inner' end of this locking member |20 is moved out of the path oi'sash member 8. The sas'hes may then be moved as desired.

In Figure 4 oi the drawing, a locking device |34 is shown in association with the frame members 8 and I0', which locking device corresponds somewhat to the locking device shown in'Figure 3 of Vthe drawing. In this embodiment, frame member 8 is provided with sleeve |28 secured thereto by Y means of the screws |30, which construction corresponds 'to the vstructure shown in Figure 3 of theV drawing. Frame member |0 is likewise providedV with sleeve ||2 closed by means of closure memberlSE formed with an opening |38. Ihe inner end of Ythe sleeve |2 is formed with opening ||8 adapted to receive the'inner end of lock- Yist ing member the 'outer' end of this'locking member being disposed within the opening |38 of Y Y the member |36. Locking member |40 is formed at its outer end with a knurled head |42 adaptedV to beV grasped between the thumb and fingers for rotating the same. `As in the embodiment shown invFigure 3 of the drawing, the inner end o! the Ylocking member |40 is threaded to engage in the sleeve'l 28.V In order to move the locking member V|40 Yout'oi Vthe path of frame member 8upo`n releaseand to holdY the frame members 8 and |0 tightly together, a coil `spring V|44 is provided,

Vwhiclrcoil spring Vcorresponds to coil spring |24.Y 'e This coil spring is dispo-sed between washer |46 abutting the 'inner end of sleeve ||2 and a washer |48 abutting a collar or shoulder |50 provided intermediate the ends of locking member |40. This Vloeking'device operates in substantially the same Ymanner as the locking device of Figure 3 of the drawing, with'the exception Vthat instead oi pro- Yviding a removable key member, the knurled head |42 serves to rotate the locking member |40'. The

It will be noted that in each oi the embodi- 5 ments, the locking member is tapered at its inner end and is received in a sleeve tapered at the end to guide this locking member. Thisconstruction facilitates initial operation of thelocking mem- Y ber in the event the iframe members are not pre- 10 cisely in their proper relative positions.

As disclosed in Figure 2 of the drawing, the present invention comprehends the idea o1' using either one of the embodiments disclosed in association with the side frame members of sashes 415, 4 and 6 so that these sashes may be moved Y into Vthe position disclosed for Ventilating purposes. The locking device serves to prevent relative movement of these sashes, yet the openings above andY below the'sashes 4 and 6 20V provide suitable openings for Ventilating purposes.

If desired, it will of course be appreciated thatthe locked sashes may be moved either into the uppermost part of the Window or into the lowermost part of the window in order to provide a larger 2'5 Ventilating space either at the top or bottom oi this window construction. It is also contemplated that these locking devices will be placed in a suitable position on the side frameV members so that Vthe opening between any one sash member30 and the window frame will not be sumciently large to permit access therethrough.

While I have herein described and upon the drawing shown illustrative embodiments of the invention, it is to be understood that the inven- 35 tion is not limitedvthereto but may comprehend other constructions, arrangements of parts', details and features without departing from the spirit of the invention.

I claim: 1 40 1. A locking device for windows, comprising an internally threaded sleeve member adapted to be mounted in a frame member of a window sash, a sleeve member having apertured forward and rear ends and adjacent shoulders with an unobstructed interior therebetween and being adapted to be mounted in an oppositeiy disposed frame member of another window sash, a locking member mounted in said second-named sleeve,

said locking member having threads at one end |50I and an enlarged head having a non-circular recessat the other end, and a'coil spring in saidY second-named sleeve having an end abutting said enlarged head and an end abutting said rear shoulder, said non-circular recess being adapted |V Y from said ilrst-named sleeve member to permit relative movement of said sashes, the shoulder at the forward end of said second named sleeve member serving as a stop for said locking member when retracted under the Vaction of said Spring.

2. A locking device for windows, comprising anw internally threaded sleeve member adapted to be mounted in a frame member of a window sash, a sleeve member having an apertured end and an adjacent shoulder and being adapted to be mounted in an oppositely disposed frame member of another window sash, a locking member mounted in said second-named sleeve, said locking member having threads at one end and an enlarged head having a non-circular recess at the other end, and a coil spring in said secondnamed sleeve having an end abutting said en-y larged head and an end abutting said shoulder, said sleeve having a closure member provided with an aperture opposite said recess, said secondnamed sleeve being unobstructed between said shoulder and said closure member, said non-circular recess being adapted to receive the shank of a key passing through the aperture of said closure member whereby the threaded end of said locking member may be rotated into and out of engagement with the threads of said first-named sleeve when said frame members are in oppositely disposed relation, said coil spring serving to retract said locking member when released from said first-named sleeve member to permit relative movement of said sashes, said closure member servingv as a stop for said locking member when retracted under the action of said spring.

3. In a locking device for windows, comprising an internally threaded sleeve member adapted to be mounted in a frame member of a window sash, a sleeve member having apertured forward and rear ends and adjacent shoulders with an unobstructed interior therebetween and being adapted to be mounted in an oppositely disposed frame member of another window sash, a locking member mounted in said second-named sleeve, said locking member having. threads at one end and an enlarged head having a non-circular recess at the other end, and a coil spring in said secondnamed sleeve having an end abutting said enlarged head and an end abutting said rear shoulder, said non-circular recess being adapted to receive the shank oi' a key insertable through the aperture at the forward end of said second named sleeve member whereby the threaded end of said locking member may be rotated into and out of engagement with the threads of said rst-named sleeve when said frame members are in oppositely disposed relation, said coil spring serving to retract said locking member when released from said first-named sleeve member to permit relative movement of said sashes, said threaded end of said locking member and the opening of said first-named sleeve member having tapered cooperating parts to facilitate alignment of said sleeves during the initial locking operation, the shoulder at the forward end of said second named sleeve member serving as a stop for said locking member when retracted under the action of said spring.

4. A locking device for windows, comprising an internally threaded sleeve member adapted to be mounted in a frame member of a window sash, a sleeve member having an apertured end and an adjacent shoulder and being adapted to be mounted in an oppositely disposed frame member of another window sash, a locking member mounted in said second-named sleeve, said locking member having threads at one end and an enlarged head having a non-circular recess at the other end, and a coil spring in said secondnamed sleeve having an end abutting said enlarged head and an end abutting said shoulder, said sleeve having a closure member provided with an aperture opposite said recess, said second named sleeve being unobstructed between said shoulder and said closure member, said noncircular recess being adapted to receive the shank vof a key passing through the aperture of said closure member whereby the threaded end of said locking member may be rotated into and out of engagement with the threads of said first-named sleeve when said frame members are in oppositely disposed relation, said -coil spring serving to retract said looking member when released from said first-named sleeve member to permit relative movement of said sashes, said threaded end of said locking member and the opening of said first-named sleeve member having tapered cooperating parts to facilitate alignment of said sleeves during the initial locking operation, said closure member serving as a stop for said locking member when retracted under the action of said spring.

5. A looking device for windows, comprising a sleeve member adapted to be mounted in a frame member of a window sash, a sleeve member adapted to be mounted in an oppositely disposed frame member of another window sash, said second named sleeve member having an unobstructed interior and being provided with abutments at its forward and rear ends, a locking member mounted in said second named sleeve and adapted to project from the rear end thereof, said locking member at its forward end having an abutment and a recess adapted to receive the shank of a key insertable through an opening in the forward end of said second named sleeve member whereby said locking member is rotated into and out of locking relation with said rst named sleeve, said locking member at its rear end and said rst named sleeve member having cooperating locking means operable upon rotation of said locking member to lock the same with said first named sleeve, and a spring disposed between the abutment at the forward end of said locking member and the rear abutment of said second named sleeve member, the abutment at the forward end of said second named sleeve serving as a stop for said locking member when retracted under the action of said spring.

6. A locking device for windows, comprising an internally threaded sleeve member adapted to be mounted in a frame member of a window sash, arsleeve member adapted to be mounted in an oppositely disposed frame member of another window sash, said second named sleeve member having apertured forward and rear ends provided with adjacent abutments and having an unobstructed interior therebetween, a locking member mounted in said second named sleeve, said locking member at its forward end having an abutment and a recess adapted to receive the shank of a key insertable through the aperture at the forward end of said second named sleeve member whereby said locking member is rotated, said locking member having a threaded rear end projecting through the aperture at the rear end of said second named sleeve member engageable with the threads of said first named sleeve, and a coil spring disposed between the abutment at the forward end of said locking member and the rear abutment of said second named sleeve member, the abutment at the forward end of said second named sleeve serving as a stop for said locking member when retracted under the action of said spring.

7. A locking device for windows, comprising a sleeve member adapted to be mounted in a frame member of a window sash, a sleeve member adapted to be mounted in an oppositely disposed frame member of another window sash, said second named sleeve member having an unobsnructed mm1-mand being provided with abutments aty its forward and rearV ends, a locking member mounted in said second named sleeve and adapted to project from the rear end thereof, said locking member at its forward end having an abutment and a recess adapted to receive the shank of a key insertable through an opening in the forwardV end of said second named sleeve member whereby said locking member is rotated into and out of locking relation with said first named sleeve, said locking member at its rear Yend and said iirst named sleeve member having cooperating locking means operable upon rotation of said locking member to lock the same with saidfirst named sleeve, and a spring disposed between the abutment at the forward endy of said Vlocking memberV and the rear abutment of said second named sleeve member, the abutment.at the forward end of said second named Vsleeve lserving as a stop for said locking member when retracted under the action of said spring, the' rear end of said locking member and the opening of said rst named sleeve member having tapered cooperating parts to facilitate alignment of said sleeves during the initial locking operation.

8. A locking device for windows, comprising a sleeve member adapted to be mounted in a frame member of a window sash, a sleeve member vadapted to be mounted in an oppositely disposed frame member Vof another window sash,

said second named sleeve member having an un- Y 5 obstructed interior and being provided with abutments atfits forward and rear ends, a locking member mounted in said second named sleeve and adapted to project from the rear end thereof. said locking member having an abutment, means 10 at the forward end of said locking member whereby the same can be rotated into and out'of locking relation with said first-named sleeve from the exterior of the abutment at the forward end of said second named sleeve member, said lockl5V tracted under the action of said spring. Il Y HARPER A. BUSBY. 

